Question 1

A 50.0 mL sample of 0.436 M NH4NO3 is diluted with water to a total volume of 250.0 mL.What is the ammonium nitrate concentration in the resulting solution?

Accepted Answer

A)  2.18 M
B)  0.523 M
C)  0.349 M
D)  0.174 M
E)  0.0872 MF) A) and E)
G) None of the above

Question 2

What is defined as the difference between the freezing point of a pure solvent and the freezing point of the solution?

Accepted Answer

A)  Freezing point
B)  freezing-point elevation
C)  freezing-point depression
D)  Subzero freezing
E)  SupercoolingF) B) and E)
G) A) and E)

Question 3

A 4.691-g sample of MgCl2 is dissolved in enough water to give 750.mL of solution.What is the magnesium ion concentration in this solution?

Accepted Answer

A)  6.25 M
B)  6.57 × 10−2 M
C)  4.38 × 10−2 M
D)  3.29 × 10−2 M
E)  2.19 ×10−2 MF) D) and E)
G) B) and C)

Question 4

What mass of water is required to dissolve 27.8 g of ammonium nitrate NH4NO3 in order to prepare a 0.452 m solution?

Accepted Answer

A)  0.0615 kg
B)  0.100 kg
C)  0.177 kg
D)  0.768 kg
E)  1.30 kgF) B) and C)
G) None of the above

Question 5

Based on the solubility rules, which one of these compounds is soluble in water?

Accepted Answer

A)  Hg2Cl2
B)  Na2S
C)  Ag2CO3
D)  Ag2S
E)  BaCO3F) D) and E)
G) All of the above B

Question 6

Which of the following is insoluble in water?

Accepted Answer

A)  Li2CO3
B)  NaOH
C)  PbCl2
D)  Ba(OH) 2
E)  (NH4) 2SF) C) and E)
G) B) and C)

Question 7

Which of these compounds is a nonelectrolyte?

Accepted Answer

A)  NaF
B)  HNO3
C)  CH3COOH (acetic acid) 
D)  NaOH
E)  C6H12O6 (glucose) F) A) and B)
G) A) and C)

Question 8

What is the molality of a solution prepared by dissolving 84.7 g of KMnO4 in 165 g of water?

Accepted Answer

A)  0.339 m
B)  0.513 m
C)  0.536 m
D)  3.25 m
E)  81.1 mF) All of the above
G) A) and C)

Question 9

What mass of water is required to dissolve 25.31 g of potassium nitrate (KNO3)  in order to prepare a 0.1982 m solution?

Accepted Answer

A)  0.5101 kg
B)  0.1277 kg
C)  1.000.kg
D)  1.263 kg
E)  0.7917 kgF) A) and B)
G) A) and E)

Question 10

What is the freezing point of a solution prepared from 50.0 g ethylene glycol (C2H6O2)  and 85.0 g H2O? (For water, Kf = 1.86°C/m)

Accepted Answer

A)  17.6°C
B)  −176°C
C)  −1.50°C
D)  1.50°C
E)  −17.6°CF) C) and D)
G) A) and B) E

Question 11

The distinguishing characteristic of all electrolyte solutions is that they

Accepted Answer

A)  contain molecules.
B)  conduct electricity.
C)  react with other solutions.
D)  always contain acids.
E)  conduct heat.F) C) and D)
G) A) and B)

Question 12

Determine the volume of a 0.119 M AlPO4 solution that contains 21.3 grams of AlPO4.

Accepted Answer

A)  0.681 L
B)  1.79 L
C)  0.559 L
D)  1.21 L
E)  1.47 LF) B) and D)
G) A) and C)

Question 13

From the following list of aqueous solutions and water, select the one with the highest boiling point.

Accepted Answer

A)  1.0 M KNO3
B)  0.75 M NaCl
C)  0.75 M CuCl2
D)  2.0 M C12H22O11 (sucrose) 
E)  pure waterF) A) and D)
G) A) and E)

Question 14

Determine the boiling point of a solution formed by dissolving 0.312 moles of sugar in 275 grams of water.(For water, Kb = 0.512°C/m)

Accepted Answer

A)  100.160°C
B)  100.581°C
C)  103.17°C
D)  101.86°C
E)  101.41°CF) A) and D)
G) D) and E)

Question 15

What is the percent CdSO4 by mass in a 1.00 molal aqueous CdSO4 solution?

Accepted Answer

A)  0.001%
B)  0.10%
C)  17.2%
D)  20.8%
E)  24.4%F) A) and E)
G) C) and D) C

Question 16

Calculate the percent by mass of potassium nitrate in a solution made from 45.0 g KNO3 and 295 mL of water at 25ºC.At this temperature, the density of water is 0.997 g/mL.

Accepted Answer

A)  1.51%
B)  7.57%
C)  13.3%
D)  15.2%
E)  86.7%F) A) and B)
G) A) and D)

Question 17

What volume of a 2.75 M solution of NaOH is required to make 500.0 mL of a 1.27 M solution of NaOH?

Accepted Answer

A)  231 mL
B)  1.72 L
C)  1.10 L
D)  440 mL
E)  909 mLF) A) and E)
G) None of the above

Question 18

Which substance is present in the smallest proportion in a solution?

Accepted Answer

A)  liquid
B)  gas
C)  solvent
D)  solid
E)  soluteF) A) and B)
G) B) and D)

Question 19

Determine the molarity of a solution made by dissolving 8.36 g of MgCl2 in water where the final volume of the solution is 500.0 mL.

Accepted Answer

A)  0.0878 M
B)  0.569 M
C)  0.0167 M
D)  0.218 M
E)  0.176 MF) B) and C)
G) B) and E)

Question 20

What mass of lithium phosphate is needed to prepare 500.mL of a solution having a lithium ion concentration of 0.125 M?

Accepted Answer

A)  2.41 g
B)  7.24 g
C)  14.5 g
D)  21.7 g
E)  43.4 gF) A) and B)
G) B) and E)

Exam 9: Physical Properties of Solutions

A 50.0 mL sample of 0.436 M NH4NO3 is diluted with water to a total volume of 250.0 mL.What is the ammonium nitrate concentration in the resulting solution?

Correct AnswerverifiedShow Answer

What is defined as the difference between the freezing point of a pure solvent and the freezing point of the solution?

Correct AnswerverifiedShow Answer

A 4.691-g sample of MgCl2 is dissolved in enough water to give 750.mL of solution.What is the magnesium ion concentration in this solution?

Correct AnswerverifiedShow Answer

What mass of water is required to dissolve 27.8 g of ammonium nitrate NH4NO3 in order to prepare a 0.452 m solution?

Correct AnswerverifiedShow Answer

Based on the solubility rules, which one of these compounds is soluble in water?

Correct AnswerverifiedB

Which of the following is insoluble in water?

Correct AnswerverifiedShow Answer

Which of these compounds is a nonelectrolyte?

Correct AnswerverifiedShow Answer

What is the molality of a solution prepared by dissolving 84.7 g of KMnO4 in 165 g of water?

Correct AnswerverifiedShow Answer

What mass of water is required to dissolve 25.31 g of potassium nitrate (KNO3) in order to prepare a 0.1982 m solution?

Correct AnswerverifiedShow Answer

What is the freezing point of a solution prepared from 50.0 g ethylene glycol (C2H6O2) and 85.0 g H2O? (For water, Kf = 1.86°C/m)

Correct AnswerverifiedE

The distinguishing characteristic of all electrolyte solutions is that they

Correct AnswerverifiedShow Answer

Determine the volume of a 0.119 M AlPO4 solution that contains 21.3 grams of AlPO4.

Correct AnswerverifiedShow Answer

From the following list of aqueous solutions and water, select the one with the highest boiling point.

Correct AnswerverifiedShow Answer

Determine the boiling point of a solution formed by dissolving 0.312 moles of sugar in 275 grams of water.(For water, Kb = 0.512°C/m)

Correct AnswerverifiedShow Answer

What is the percent CdSO4 by mass in a 1.00 molal aqueous CdSO4 solution?

Correct AnswerverifiedC

Calculate the percent by mass of potassium nitrate in a solution made from 45.0 g KNO3 and 295 mL of water at 25ºC.At this temperature, the density of water is 0.997 g/mL.

Correct AnswerverifiedShow Answer

What volume of a 2.75 M solution of NaOH is required to make 500.0 mL of a 1.27 M solution of NaOH?

Correct AnswerverifiedShow Answer

Which substance is present in the smallest proportion in a solution?

Correct AnswerverifiedShow Answer

Determine the molarity of a solution made by dissolving 8.36 g of MgCl2 in water where the final volume of the solution is 500.0 mL.

Correct AnswerverifiedShow Answer

What mass of lithium phosphate is needed to prepare 500.mL of a solution having a lithium ion concentration of 0.125 M?

Correct AnswerverifiedShow Answer

A 50.0 mL sample of 0.436 M NH₄NO₃ is diluted with water to a total volume of 250.0 mL.What is the ammonium nitrate concentration in the resulting solution?

Correct Answer
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A 4.691-g sample of MgCl₂ is dissolved in enough water to give 750.mL of solution.What is the magnesium ion concentration in this solution?

Correct Answer
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What mass of water is required to dissolve 27.8 g of ammonium nitrate NH₄NO₃ in order to prepare a 0.452 m solution?

Correct Answer
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B

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What is the molality of a solution prepared by dissolving 84.7 g of KMnO₄ in 165 g of water?

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What mass of water is required to dissolve 25.31 g of potassium nitrate (KNO₃) in order to prepare a 0.1982 m solution?

Correct Answer
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What is the freezing point of a solution prepared from 50.0 g ethylene glycol (C₂H₆O₂) and 85.0 g H₂O? (For water, K_f = 1.86°C/m)

Correct Answer
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E

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Determine the volume of a 0.119 M AlPO₄ solution that contains 21.3 grams of AlPO₄.

Correct Answer
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Determine the boiling point of a solution formed by dissolving 0.312 moles of sugar in 275 grams of water.(For water, K_b = 0.512°C/m)

Correct Answer
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What is the percent CdSO₄ by mass in a 1.00 molal aqueous CdSO₄ solution?

Correct Answer
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C

Calculate the percent by mass of potassium nitrate in a solution made from 45.0 g KNO₃ and 295 mL of water at 25ºC.At this temperature, the density of water is 0.997 g/mL.

Correct Answer
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Correct Answer
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Correct Answer
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Determine the molarity of a solution made by dissolving 8.36 g of MgCl₂ in water where the final volume of the solution is 500.0 mL.

Correct Answer
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Correct Answer
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